EP3202365B1 - Zahnkomponente für die prothetische einzelzahnversorgung - Google Patents

Zahnkomponente für die prothetische einzelzahnversorgung Download PDF

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Publication number
EP3202365B1
EP3202365B1 EP17154318.4A EP17154318A EP3202365B1 EP 3202365 B1 EP3202365 B1 EP 3202365B1 EP 17154318 A EP17154318 A EP 17154318A EP 3202365 B1 EP3202365 B1 EP 3202365B1
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EP
European Patent Office
Prior art keywords
longitudinal
passage
dental
longitudinal axis
longitudinal fins
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Application number
EP17154318.4A
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English (en)
French (fr)
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EP3202365A1 (de
Inventor
Hervé Richard
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Anthogyr SA
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Anthogyr SA
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Publication of EP3202365A1 publication Critical patent/EP3202365A1/de
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0063—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an internal sleeve
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0022—Blanks or green, unfinished dental restoration parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A61C13/083—Porcelain or ceramic teeth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A61C13/09—Composite teeth, e.g. front and back section; Multilayer teeth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—Fastening prostheses in the mouth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—Fastening prostheses in the mouth
    • A61C13/265—Sliding or snap attachments
    • A61C13/2656—Snap attachments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0056—Connecting devices for joining an upper structure with an implant member, e.g. spacers diverging in the apical direction of the implant or abutment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0057—Connecting devices for joining an upper structure with an implant member, e.g. spacers with elastic means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0062—Catch or snap type connection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0066—Connecting devices for joining an upper structure with an implant member, e.g. spacers with positioning means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0068—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an additional screw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection

Definitions

  • the present invention relates to the dental field, and more particularly relates to a dental component for the unitary prosthetic restoration of a tooth, said dental component being intended to be received on a dental implant.
  • transfixed prosthesis that is to say provided with a through passage for fixing the prosthesis by a fixing screw (through the prosthesis ) a dental implant that is osteointegrated in the patient's jaw.
  • Dental prostheses are known for this purpose (see in particular the documents EP 2 053 985 , WO 2013/004387 and US 2014/0178836 ) core provided with an angulated through passage comprising a first passage section extending from a proximal end of the first element along a first longitudinal axis, and comprising a secant second passage section with the first passage section, the first and second sections of passage forming a non-zero angle between them.
  • proximal is meant to describe a part of an element intended to be closer to the patient during its use than another part which will be described as “distal”.
  • the angulated through passage allows an insertion and a path of the fastening screw along a curved path by a path starting in the second section of passage and continuing into the first section of passage at the end of which is provided a seat against which comes to support the screw head.
  • This curved trajectory of the screw requires a considerable removal of material in the core of the prosthesis, which weakens its mechanical strength.
  • the document GB 2,509,136 discloses a dental component having a first ceramic core member and a second member for engagement with the first member and a dental implant for indexing the first member in rotation relative to the dental implant.
  • the second element comprises longitudinal fins capable of providing a precarious connection between the first and second elements.
  • the first element of the ceramic core type comprises an angulated through passage allowing an insertion and a path of the fastening screw along a curved path by a path starting in the second section of passage and continuing into the first section of passage through the end of which is provided a seat against which bears the screw head. This curved trajectory of the screw requires a considerable removal of material in the core of the prosthesis, which weakens the mechanical strength of the first element.
  • the document EP 2 127 612 A1 concerns an angled dental abutment for a plural prosthetic restoration.
  • This angled dental abutment has a first passage which is rectilinear and crosses the pillar from one side to the other.
  • This two-passage structure forming an intersection requires a significant material withdrawal, source of a weakening of mechanical strength.
  • a problem proposed by the present invention is to provide another solution for attaching to a dental implant a transfixed dental prosthesis comprising a core on which is performed a lamination or having a ceramic core, allowing the use of an angulated through passage for to take into account the orientation constraints of the osseointegrated dental implant, accessibility and preservation of the active portions of the tooth, without, however, unnecessarily weakening the mechanical strength of said transfixed dental prosthesis.
  • Such a dental component makes it possible to fix on a dental implant satisfactorily the first element comprising an angulated passage, which first element is a dental prosthesis core intended to be laminated or a one-piece ceramic core (sintered or machined) of dental prosthesis, while taking due account of the orientation constraints of the osseointegrated dental implant, accessibility in the mouth, and preservation of the active parts of the tooth.
  • the screw head When the screw is tensioned by screwing in the dental implant, the screw head is attracted to the second element along the second longitudinal axis and causes a radial displacement of the free distal portions of the longitudinal fins away from the second longitudinal axis . This has the effect of pressing the free distal portions of the longitudinal fins against the side wall of the first passage section, and therefore to oppose withdrawal of the first element away from the second element.
  • the removal of material that must be carried out in the first element to achieve the angulated passage is less, especially compared to what is practiced in documents GB 2,509,136 , EP 2 053 985 , WO 2013/004387 and US 2014/0178836 .
  • the screw is only received in the first section of passage and no longer transits through the second section of passage. Only the tool for rotating the fastening screw passes through the second section of passage, and the traversing portion of the tool is devoid of head.
  • the first and second sections of passage can thus have relatively simple shapes (substantially cylindrical).
  • the second section of passage may in turn have transverse dimensions smaller than those of the first section of passage, only sufficient for the passage of a tool for driving in rotation the screw along the second longitudinal axis.
  • a tool allowing angulation with the screw head during screwing or unscrewing, as described for example in the document EP 2,607,722 .
  • first and second passage sections follow and thus form a first angular through passage substantially in the form of a "bend".
  • a structure makes it possible to remove less material, and thus less to weaken the mechanical strength, than the intersection between two passages that is used in the document EP 2 127 612 A1 .
  • the screw head may comprise a substantially frustoconical contact surface intended to come into contact with the free distal parts of the longitudinal fins and / or the free distal parts of the longitudinal fins comprise respective contact surfaces designed to receive the screw head and forming a substantially frustoconical surface.
  • the dental component may comprise means for indexing in rotation of the first and second elements around the first longitudinal axis. This limits the risk of movement between the first and second elements, such movements may lead to premature failure of one or the other element (in particular by wear).
  • the second element may comprise a proximal appendix of non-circular cross section intended to be received in a non-circular cross sectional housing of the dental implant.
  • the first element may comprise a groove intended to receive the free distal parts of the longitudinal fins during their radial displacement away from the second longitudinal axis.
  • the radial engagement of the free distal portions of the longitudinal fins in the groove provides improved retention of the first member to the second member.
  • the engagement of the free distal portions of the longitudinal fins in the groove can be reversible.
  • the reversible nature of the engagement of the longitudinal fins in the groove allows the prosthetist to assemble and separate easily and repeatedly the first element of the second element and the fixing screw to pass in the oven only the first element during its stratification . This avoids degradation of the second element and the fixing screw by oxidation.
  • the groove and / or the free distal portions of the longitudinal fins may comprise respective shaped contact surfaces so that the radial pressing of the free distal portions of the longitudinal fins against the groove induces along the first longitudinal axis a pressing of the proximal end of the first element against the distal end of the second element.
  • the latching of the longitudinal fins in the groove makes it possible to secure in a precarious (because reversible) way, but sufficient, the first and second elements enclosing between them the fixing screw.
  • the prosthetist can thus send to the dentist a unitary subassembly comprising the first and second elements and the fastening screw assembled.
  • the dental surgeon can then introduce the unitary subassembly in a single gesture into the patient's mouth and engage it on the osseointegrated dental implant. This reduces the number of elements to handle, the risk of losing components (including the screw) and the risk of mishandling.
  • the second element may be shaped so as to return and fix the first element on the dental implant without contact between the first element and the dental implant.
  • the second element thus serves as a spacer between the first element and the dental implant. This avoids that relative micromovements between the first element and the dental implant cause premature wear of the dental implant which is osteointegrated and therefore need to avoid having to replace. This is particularly important when the dental implant is not ceramic (but for example metal, titanium or titanium alloy in particular). If micromovements occur between the first element and the second element inducing premature wear of the latter, the second element can easily and quickly be replaced. And if there is wear of the second debris generating element, this debris will be generated in an area away from the bone, which limits the risk of necrosis of the bone around the dental implant.
  • FIG. 1 to 10 two embodiments of a dental component 1 according to the invention are illustrated. A first embodiment is illustrated on the Figures 1 to 9 , and a second embodiment is illustrated on the figure 10 .
  • Three longitudinal fins 13a, 13b and 13c extend along the second longitudinal axis II-II from and away from the distal end 7b of the second element 7, each longitudinal fin 13a, 13b or 13c having a free distal portion 130a to 130c radially movable away from the second longitudinal axis II-II.
  • the screw rod 11 is able to pass through the second element 7 by being received between the longitudinal fins 13a to 13c and in the second through passage 8 to be screwed into the dental implant 2, while the screw head 10 then comes to rest. in axial support against the free distal parts 130a to 130c of the longitudinal fins 13a to 13c for retaining the second element 7 on the dental implant 2 ( figure 9 ).
  • the first passage section 5 of the first element 3 comprises transverse dimensions allowing the longitudinal fins 13a to 13c and the screw head 10 to be received by axial penetration along the first longitudinal axis II from the proximal end 3a of the first element 3.
  • the first passage section 5 comprises, in the vicinity of the proximal end 3a, a minimum diameter D50 less than the diameter D130 of the free distal ends 130a to 130c.
  • the reception of the longitudinal fins 13a to 13c is therefore done by means of a slight radial displacement of the free distal portions 130a to 130c towards the second longitudinal axis II-II, as illustrated in FIG. figure 6 .
  • the screw head 10 and the free distal portions 130a to 130c of the longitudinal fins 13a to 13c are shaped so that, when the first element 3 receives the longitudinal fins 13a to 13c and the screw head 10, a relative displacement in translation of the fixing screw 9 towards the second element 7 along the second longitudinal axis II-II causes a radial displacement of the free distal parts 130a to 130c of the longitudinal fins 13a to 13c away from the second longitudinal axis II-II to press them against the side wall 5a of the first passage section 5 in order to oppose a withdrawal of the first element 3 away from the second element 7.
  • the second passage section 6 has transverse dimensions (in this case a diameter D6) smaller than those (diameter D5) of the first passage section 5, but sufficient for the passage of a tool for rotating the screw fastening 9 along the second longitudinal axis II-II.
  • the screw head 10 comprises a hollow screw-in recess 10a with a non-circular, in this case polygonal, hexagonal cross-section.
  • the imprint 10a can also be designed according to the teachings of the document EP 2,607,722 to to authorize the use of a rotational drive tool allowing a patella effect.
  • the first passage section 5 must have a minimum cross section with a diameter D5 slightly greater than the outside diameter D10 of the screw head 10.
  • the second passage section 6 may have transverse dimensions (diameter D6 here ) less than those of the first section of passage 5, because the tool for driving in rotation of the fixing screw 9 may itself have a cross section much smaller than the diameter D10 since it must only enter the cavity 10a hollow of the screw head 10.
  • the first element 3, in the vicinity of the second passage section 6 can thus retain more constituent material and thus have a better mechanical strength.
  • the screw head 10 has a substantially frustoconical contact surface 10b intended to come into contact against the free distal parts 130a to 130c of the longitudinal fins 13a to 13c.
  • the free distal portions 130a to 130c of the longitudinal fins 13a to 13c comprise respective contact surfaces 131a to 131c intended to receive the screw head 10 in contact and forming a substantially frustoconical surface 14.
  • the surface of contact 10b of the screw head 10 and the substantially frustoconical surface 14 formed by the respective contact surfaces 131a to 131c may, instead of having a rectilinear profile as shown in FIG.
  • figure 2 have a curved profile (convex or concave) when it is similarly provided a gradual decrease in cross section.
  • contact surfaces 10b and / or 14 troncosoirerique intersection of a sphere between two substantially parallel planes. All these form variants are considered covered by the term "substantially frustoconical”.
  • the shapes of the contact surfaces 10b and 14 promote the radial displacement of the free distal parts 130a to 130c away from the second longitudinal axis II-II when the fastening screw 9 undergoes a translational relative displacement towards the second element 7 when it is screwed into a dental implant 2.
  • the first element 3 comprises, at the entrance of the first passage section 5, three radial housings 15a to 15c arranged at 120 ° from each other and intended to receive three corresponding lugs 16a to 16c provided on the second element 7 at the base longitudinal fins 13a to 13c (the lug 16a is not visible on the figure 4 because of the orientation of the second element 7).
  • Radial housings 15a to 15c and lugs corresponding 16a to 16c constitute rotating indexing means 17 of the first and second elements 3 and 7 around the first longitudinal axis II (which coincide with the second longitudinal axis II-II when the first and second elements 3 and 7 are assembled) .
  • the second element 7 comprises a proximal appendage 18 with a non-circular cross-section (substantially triangular with rounded vertices) intended to be received in a corresponding housing 19 ( figure 8 ) of the dental implant 2, having a corresponding non-circular cross section.
  • the proximal appendix 18 and the housing 19 cooperate to index in rotation about the second longitudinal axis II-II the second element 7 relative to the dental implant 2.
  • proximal appendage 18 is a frustoconical section intended to conically engage in the dental implant 2.
  • the first element 3 comprises a groove 20 intended to receive the free distal parts 130a to 130c of the longitudinal fins 13a to 13c during their radial displacement away from the second longitudinal axis II-II.
  • the groove 20 and the screw head 10 comprise respective contact surfaces 21 and 22 shaped so that the radial pressing of the free distal parts 130a to 130c of the longitudinal fins 13a to 13c against the groove 20 induces along the first longitudinal axis II a pressing the proximal end 3a of the first element 3 against the distal end 7b of the second element 7.
  • the contact surface 21 of the groove 20 comprises a frustoconical section 210, while the respective contact surfaces 22a at 22c, free distal portions 130a to 130c form a substantially frustoconical surface 22.
  • these so-called “substantially frustoconical” surfaces are represented with a straight profile, but this profile could also be curved (concave or convex).
  • the free distal portions 130a to 130c of the longitudinal fins 13a to 13c are movable between a withdrawal position ( figure 6 ) in which they are radially distant from the second longitudinal axis II-II at a first distance d1, and a spacing position ( figure 7 ), in which they are radially spaced from the second longitudinal axis II-II by a second distance d2 greater than the first distance d1.
  • the free distal portions 130a to 130c of the longitudinal fins 13a to 13c are resiliently biased to the spaced position ( figure 7 ).
  • the groove 20 and the longitudinal fins 13a to 13c are dimensioned and shaped so that the free distal portions 130a to 130c of the longitudinal fins 13a to 13c are received by snapping into the groove 20 when the first passage section 5 receives the longitudinal fins 13a to 13b and the screw head by axial penetration along the first longitudinal axis II.
  • the first element 3 is a prosthesis core, made of metal or other material, intended to be laminated.
  • the lamination 27 carried out by the dental technician leaves the second passage section 6 open.
  • the second embodiment illustrated on the figure 10 differs from the first embodiment illustrated on the figure 9 only in that the first element 3 is a one-piece ceramic body of dental prosthesis.
  • This one-piece ceramic core can be obtained by machining in a solid block of ceramic or can be obtained by sintering a powder.
  • the monobloc ceramic core may further comprise on the outer surface a slight layer of a material such as a varnish giving it an aesthetic better suited to the dentition of the patient (for example in terms of hue if the patient has the teeth more or less yellow).
  • the second section of passage is closed by the dental surgeon after the dental component 1 has been attached and fixed on the dental implant 2 by means of the fixing screw 9.
  • the prosthetist has a second element 7 and a fixation screw 9 which are standard elements corresponding to a dental implant 2 osteointegrated in the jaw of the patient.
  • the first element 3 is a piece made to measure for the patient by the prosthetist, preferably by three-dimensional machining.
  • the prosthetist inserts the screw rod 11 between the longitudinal fins 13a to 13c and in the second through-passage 8 (movement illustrated by arrow 29 on the figure 5 ).
  • the prosthetist inserts in the first passage section 5 the longitudinal fins 13a to 13c and the screw head 10 by an axial translation movement (illustrated by the arrow 30 on the figure 6 ) along the first longitudinal axis II from the proximal end 3a of the first element 3.
  • the free distal portions 130a to 130c move elastically from their spacing position ( figure 5 ) to a withdrawal position ( figure 6 ).
  • the prosthetist then continues the axial translation movement (arrow 30 of the figure 6 ) until a detent of the free distal portions 130a to 130c of the longitudinal fins 13a to 13c in the groove 20 (FIG. figure 7 ).
  • the lugs 16a to 16c are received in the housings 15a to 15c to index in rotation the first and second elements 7 around the first longitudinal axis II.
  • the assembled dental component 1 is thus obtained as illustrated in FIG. figure 7 .
  • the prosthetist then stratifies the first element 3, leaving open the second passage section 6. During this stratification, the dental component 1 is generally installed on a master model.
  • the prosthetist applies on the first element 3 a material in one or more layers to give an appearance closest to a natural tooth, while taking into account the adjacent teeth.
  • Each layer is baked.
  • the dental technician removes the dental component 1 from the master model and easily separates the first laminate element 3 from the second element 7 and the fixing screw 9 by virtue of the reversible engagement of the free distal parts 130a-130c of the longitudinal fins 13a-13c in the groove 20.
  • the first element 3 is then passed to the oven to bake the layer of applied material.
  • the second element 7 and the fixing screw 9 do not go into the oven to prevent their oxidation.
  • a second oxidized element 7 could cause gingival shrinkage.
  • oxidation of the second element 7 and / or the fixing screw 9 reduce its (their) mechanical strength.
  • the first element 3 laminated by the prosthetist can proceed to a final ex-vivo assembly of the dental component 1, then it sends the assembled dental component 1 to the dentist who will proceed to its installation in the patient's mouth .
  • the dentist inserts the second element 7 (which can sometimes be described as "Base") in the inner housing 24 of the dental implant 2.
  • the proximal appendix 18 cooperates with the housing 19 of the dental implant 2 to index the dental component 1 in rotation about the second longitudinal axis II-II.
  • the frustoconical section located above the proximal appendix 18 is conically engulfed in a frustoconical surface of corresponding shape located above the housing 19 of non-circular cross section of the dental implant 2. This conical fitting contributes to a good stability of the assembly.
  • the dental surgeon then inserts in the second section of passage 6 a tool (a hexagonal wrench in this case) until its end penetrates into the cavity 10a hollow of the screw head 10, making it possible to drive in rotation the fixing screw 9.
  • the dental surgeon then screws the fixing screw 9 into the threaded portion 25 of the dental implant 2, which has the effect of relatively relatively displacing the fixing screw 9 towards the second element 7 along the second longitudinal axis II-II. Due to the conformation of the screw head 10 and the free distal parts 130a to 130c of the longitudinal fins 13a to 13c, this translational movement of the fixing screw 9 causes a radial displacement of the free distal parts 130a to 130c to the distance from the second longitudinal axis II-II to press against the side wall 5a of the first passage section 5.
  • the dental surgeon closes the orifice 28 of the second passage section 6 by means of a suitable material.
  • the use of dental components illustrated on the figure 10 is in all respects similar to the previously described use of the dental component 1 of the Figures 1 to 9 .
  • the first element 3 may also be laminated (optional) by the application by the prosthetist of one or more very light texturing or coloring layers providing an appearance closest to a natural tooth.
  • the second element 7 makes it possible to relate and fix the first element 3 on the dental implant 2 without direct contact between the first element 3 and the dental implant 2.
  • the second element 7 serves as a spacer. This avoids that relative micromovements between the first element 3 and the dental implant 2 cause premature wear of the dental implant 2 which is osteointegrated and therefore need to avoid having to replace. This is particularly important when the dental implant 2 is not ceramic (but for example metal, titanium or titanium alloy in particular). If micromovements occur between the first element 3 and the second element 7 inducing premature wear of the latter, the second element 7 can easily and quickly be replaced.

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  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Dental Prosthetics (AREA)
  • Prostheses (AREA)

Claims (12)

  1. Dentalkomponente (1) zur individuellen prothetischen Rekonstruktion eines Zahnes, die zur Aufnahme auf einem Dentalimplantat (2) vorgesehen ist, umfassend:
    - ein erstes Element (3) nach Art eines Kerns, auf dem Stratifizierung durchgeführt ist oder nach Art eines Keramikkerns, wobei das besagte erste Element (3) einen ersten Durchgangsdurchlass (4) aus aufeinanderfolgend einem ersten (5) und zweiten (6) Durchlassabschnitt besitzt, wobei sich der besagte erste Durchlassabschnitt (5) von einem proximalen Ende (3a) des ersten Elementes (3) entlang einer ersten Längsachse (I-I) erstreckt und der besagte zweite Durchlassabschnitt (6) den ersten Durchlassabschnitt (5) derart verlängert, dass der erste (5) und zweite (6) Durchlassabschnitt zwischen sich einen Winkel (A) ungleich Null bilden,
    - ein zweites Element (7) mit einem sich entlang einer zweiten Längsachse (II-II) erstreckenden zweiten Durchgangsdurchlass (8), umfassend ein distales Ende (7b) zur Aufnahme des ersten Elementes (3) per Auflage und umfassend ein proximales Ende (7a) zum axialen Auflagern auf oder zum Eingriff in das besagte Dentalimplantat (2),
    - eine Fixierschraube (9) umfassend einen Schraubenkopf (10) von dem sich ein Schraubenschaft (11) mit einem Gewindeabschnitt (12) zur Schraubaufnahme im besagten Dentalimplantat (2) erstreckt,
    - mehrere Längsrippen (13a-13c), die sich entlang der zweiten Längsachse (II-II) vom distalen Ende (7b) des zweiten Elementes (7) wegerstrecken, wobei jede Längsrippe (13a-13c) einen freien distalen Teil (130a-130c) umfassen, der radlan von der zweiten Längsachse (II-II) wegbewegbar ist,
    dadurch gekennzeichnet, dass
    - der Schraubenschaft (11) durch das zweite Element (7) durch Aufnahme zwischen Längsrippen (13a-13c) und in den zweiten Durchgangsdurchlass (8) zum Schrauben in das Dentalimplantat (2) führbar ist, während der Schraubenkopf (10) dann axial gegen die freien distalen Teile (130a-130c) der Längsfinnen (13a-13c) zur Anlage kommt, um das zweite Element (7) auf dem Dentalimplantat (2) zu halten,
    - der erste Durchlassabschnitt (5) des ersten Elementes (3) eine Querausdehnung aufweist, die es den Längsfinnen (13a-13c) und dem Schraubenkopf (10) ermöglicht, durch axiales Eindringen entlang der ersten Längsachse (I-I) vom proximalen Ende (3a) des ersten Elementes (3) aufnehmbar ist,
    - der Schraubenkopf (10) und die freien distalen Teile (130a-130c) der Längsrippen (13a-13c) derart konfiguriert sind, dass wenn das erste Element (3) die Längsfinnen (13a-13c) und den Schraubenkopf (10) aufnimmt, eine relative translatorische Verschiebung der Fixierschraube (9) gegen das zweite Element (7) entlag der zweiten Längsachse (II-II) eine radiale Verschiebgung der freien distalen Teile (130a-130c) der Längsrippen (13a-13c) weg von der zweiten Längsachse (II-II) verursacht, um sie gegen die äußere Wand (5a) des ersten Durchlassabschnitts (5) zu drücken, um sich einem Entfernen des ersten Elementes (3) weg vom zweiten Element (7) zu widersetzen,
    - der zweite Durchlassabschnitt (6) des ersten Elementes (3) eine Querausdehnung aufweist, die kleiner ist, als die des ersten Durchlassabschnittes (5).
  2. Dentalkomponente (1) nach Anspruch 1, dadurch gekennzeichnet, dass der Schraubenkopf (10) eine im Wesentlichen kegelstumpfförmige Kontaktoberfläche (10b) umfasst, die vorgesehen ist, gegen die freien distalen Teile (130a-130c) der Längsrippen (13a-13c) zu kommen und/oder die freien distalen Teile (130a-130c) der Längsrippen (13a-13c) entsprechende Kontaktoberflächen (131a-131c) umfassen, die vorgesehen sind, den Schraubenkopf (10) per Anlage aufzunehmen und eine im Wesentlichen kegelstumpfförmige Oberfläche (14) bilden.
  3. Dentalkomponente (1) nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass sie Drehindizierungsmittel (17) zum Indizieren des ersten (3) und zweiten (7) Elementes um die erste Längsachse (I-I) umfasst.
  4. Dentalkomponente (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das zweite Element (7) einen proximalen Fortsatz (18) mit einem nichtkreisförmigen Querschnitt umfasst, der vorgesehen ist, in einem Gehäuse (19) des Dentalimplantats (2) mit nichtkreisförmigen Querschnitt aufgenommen zu werden.
  5. Dentalkompenente (1) nach einem der vorstehenden Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das erste Element (3) eine Dentalprothese mit keramischen Monoblockkern ist, der vorzugsweise aus einem keramischen Festblock gefertigt oder durch Sintern erhalten ist.
  6. Dentalkomponente (1) nach einem der vorstehenden Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Schraubenkopf (10) eine hohle Schraubbuchse (10a) mit nichtkreisförmigem Querschnitt umfasst.
  7. Dentalkomponente (1) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das erste Elemente (3) eine Rille (20) umfasst, die vorgesehen ist, die freien distalen Teile (130a-130c) der Längsrippen (13a-13c) aufzunehmen, während ihrer radialen Verschiebung weg von der zweiten Längsachse (II-II).
  8. Dentalkomponente (1) nach Anspruch 7, dadurch gekennzeichnet, dass die freien distalen Enden (130a-130c) der Längsrippen (13a-13c) in der Rille (20) durch reversiblen Eingriff aufgenommen sind.
  9. Dentalkomponente (1) nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass die Rille (20) und/oder die freien distalen Teile (130a-130c) der Längsrippen (13a-13c) entsprechende Kontaktflächen (21, 22, 22a-22c) umfassen, die derart konfiguriert sind, dass das radiale Drücken der freien distalen Teile (130a-130c) der Längsrippen (13a-13c) gegen die Rille (20) entlang der ersten Längsachse (I-I) ein Pressen des proximalen Endes (3a) des ersten Elementes (3) gegen das distale Ende (7b) des zweiten Elementes (7) verursacht.
  10. Dentalkomponente (1) nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass
    - die freien distalen Teile (130a-130c) der Längsrippen (13a-13c) zwischen einer Verschlussposition, in der sie mit einer ersten Entfernung (d1) radial entfernt von der zweiten Längsachse (II-II) sind und einer Ausbreitungsposition, in der sie mit einer zweiten Entfernung (d2), größer als die erste Entfernung (d1), radial von der zweiten Längsachse (II-II) entfernt sind, verschieblich sind,
    - die zweiten distalen Teile (130a-130c) der Längsrippen (13a-13c) elastisch in die Ausbreitungsposition rückgestellt sind,
    - die Rille (20) und die Längsrippen (13a-13c) derart dimensioniert und konfiguriert sind, dass die freien distalen Teile (130a-130c) der Längsrippen (13a-13c) durch Schnappverschluss in der Rille (20) aufgenommen sind, wenn der erste Durchlassabschnitt (5) die Längsrippen (13a-13c) und den Schraubenkopf (10) durch axiales Eindringen entlang der ersten Längsachse (I-I) aufnimmt.
  11. Dentalaufbau (23), umfassend:
    - eine Dentalkomponente (1) nach einem der vorstehenden Ansprüche 1 bis 10,
    - ein Dentalimplantat (2), umfassend ein internes Gehäuse (24) mit einem Gewindeabschnitt (25) zur Aufnahme der Fixierschraube (9) durch Schrauben.
  12. Verfahren zum ex-vivo-Aufbau einer Dentalkomponente (1) nach Anspruch 10, umfassend die folgenden Schritte:
    a) Einsetzen des Schraubenschaftes (11) zwischen die Längsrippen (13a-13c) und in den Durchgangsdurchlass (8),
    b) Einsetzen der Längsrippen (13a-13c) und des Schraubenkopfes (10) in den ersten Durchlassabschnitt (5) durch eine axiale translatorische Bewegung entlang der ersten Längsachse (I-I) vom proximalen Ende (3a) des ersten Elementes (3) bis die freien distalen Teile (130a-130c) der Längsrippen (13a-13c) in die Rille (20) einschnappen.
EP17154318.4A 2016-02-05 2017-02-02 Zahnkomponente für die prothetische einzelzahnversorgung Active EP3202365B1 (de)

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FR1650935A FR3047407B1 (fr) 2016-02-05 2016-02-05 Composant dentaire pour la restauration prothetique unitaire d'une dent

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EP4059469A1 (de) 2021-03-16 2022-09-21 Anthogyr Dentale untergruppe für die einheitliche prothetische versorgung eines zahns und erstes element, das damit verbunden wird

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EP4059468A1 (de) 2021-03-16 2022-09-21 Anthogyr Hilfsvorrichtung für die bearbeitung eines zahnprothesenrohlings
EP4059469A1 (de) 2021-03-16 2022-09-21 Anthogyr Dentale untergruppe für die einheitliche prothetische versorgung eines zahns und erstes element, das damit verbunden wird
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CN107041789B (zh) 2019-10-25
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EP3202365A1 (de) 2017-08-09
ES2700142T3 (es) 2019-02-14
FR3047407A1 (fr) 2017-08-11
US10010384B2 (en) 2018-07-03
JP2017136372A (ja) 2017-08-10
US20170224447A1 (en) 2017-08-10
FR3047407B1 (fr) 2021-06-11

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